Sigrand SG-16B, Руководство пользователя

Страница: 34 / 36

Appendix I
General specifications of TPP cable
Table I.1 Frequency response for twisted-pair cabling with copper
conductor and PE-insulation (for reference only)
f,
kHz
Primary ratings
Secondary ratings
R~,
Ω
/km
L, H/km*10 -4 G,S/km*10 -4 |Z|,
Ω α
, dB/km
Conductor diameter 0.4 mm (26 AWG)
20 278 5.51 1.13 225.2 6.81
50 280 5.51 4.24 152.6 9.12
100 283 5.50 11.3 125.7 10.3
250 316 5.46 42.2 113.7 12.2
500 394 5.35 120 110.5 15.6
700 455 5.26 188 109.1 18.2
1000 535 5.15 305 107.7 21.7
Conductor diameter 0.5 mm (24 AWG)
20 181 5.50 1.13 185.1 5.15
50 182 5.50 4.24 133.3 6.48
100 189 5.49 11.3 118.0 7.17
250 234 5.40 42.2 111.6 9.21
500 310 5.23 120 108.8 12.4
700 361 5.26 188 107.4 14.6
1000 424 5.04 305 106.3 17.2
Table I.2 Cable loop resistance to conductor diameter ratio:
Conductor diameter
(mm)
Loop resistance
(
Ω
/km)
0.32 432
0.4 278
0.5 180
0.64 110
34